The study looked at how using straw along with less chemical fertilizer affects soil nutrients and enzyme activity in a rice-vegetable rotation system. Different treatments were tested in the field, and results showed that using straw with reduced fertilizer increased rice and vegetable yields. Soil pH levels increased with straw and less fertilizer, especially with 70% and 80% of the usual amount. Soil organic matter was highest with 80% of the usual fertilizer. Straw with 80% of the usual fertilizer also increased soil available nitrogen and phosphorus. However, too much straw had a negative impact on soil available phosphorus. Enzyme activity in the soil, like urease and catalase, increased significantly with straw and less fertilizer compared to the usual treatment.